Cleaning Flues

I just finished cleaning the flues on my Garn. I turn the fan on to exhaust the ash from the first two flues but the two by the fan have always been messy as the fan is removed and I had no way to exhaust. I solved the problem by cutting tapered plugs out of Styrofoam to plug the flue and drilled a hole for the cleaning rod to pass through. I can now power clean the flue without the ash mess.